Question

a non-metal 'A' is an important constituent of our food and forms two oxides 'B' and 'C' oxide 'B' is toxic where as 'C' causes global warming 1. identify 'A' 'B' AND 'C' 2. to which group of periodic table does it belong. i cant understand these type of problems plzzzzzzzz tell me

Answer 1

CO2 causes global warming 
CO is toxic
and C is the constituent of our food
therefore
A- C
B-CO
C-CO2
carbon- period-2
             group-14